* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
a {
  text-decoration: none;
  color: red;
}
.app {
  background-color: #fff;
}
.app section {
  position: relative;
  left: 330px;
  width: 1200px;
  background-color: #e7e3e2;
  padding: 10px;
}
.app section .header {
  padding: 15px 10px;
  width: 100%;
  height: 50px;
  background-color: #f1f1f1;
  border: 1px solid #999;
  border-bottom: 0;
}
.app section .body {
  position: relative;
  width: 100%;
  height: 150px;
  overflow: hidden;
  border: 1px solid #999;
  border-top: 1px dashed #999;
  margin-bottom: 15px;
}
.app section .body img {
  position: absolute;
  top: 10px;
  left: 10px;
  height: 130px;
  width: 130px;
}
.app section .body .img_msg {
  position: absolute;
  top: 60px;
  left: 170px;
}
.app section .body h3 {
  position: absolute;
  top: 60px;
  left: 500px;
}
